.page-index {
    position: relative;

    .header-nav {
        width: 100%;
        position: fixed;
        top: 0;
        left: 50%;
        transform: translate(-50%, 0);
        z-index: 10000;

        a {
            text-decoration: none;
            text-align: center;
            color: #111111;
            font-size: 26px;
            flex: 1;
            height: 45px;
            line-height: 45px;
        }

        a.active {
            color: #e02433;
            font-weight: bold;
            border-bottom: 1px solid #e02433;
            border-bottom-width: 2px;
            /*px*/
        }
    }

    .context-index {
        padding-top: 90px;
        /*rem*/
    }
}